I've heard that about Japan's bread! A number of YouTuber's we watch rave about the egg salad sandwiches at Lawson but the bread reminds me of the Wonder bread we ate in the 1970s. I'd still like to try one of those sandwiches. : )
haha yeah, white bread is surprisingly popular and is pretty much the only option at convenience stores. All the same health information is available here as there and people are fully aware that white bread (and rice) is not exactly good for us, and that brown is much healthier. But industry in this country moves at a glacial pace and change only trickles in. The Lawson's sandwiches do taste good, mind you, just it's more like eating junk food... you get that sugar high and feel great, but it quickly goes away and you are left unsatisfied.
